S 
Sierra
Conversational AI agents for customer experience, billed per outcome.
NOT REALLY
why this verdict
Keep it — OpenAI has not replaced it
OpenAI's version overlaps, but does not finish the support job, so this one is still worth keeping open.
- A named launch, not a vibe named, unlinked
- Helpdesk incumbents bundle AI agents into existing contracts. OpenAI, February 1, 2025 — no announcement link recorded yet.
- How much of the job it covers not the job editorial call
- Parts of it. The job still needs the tool to get finished.
- Is there a free way to do it? paid only
- 2 replacements listed, all paid.
- What the call is worth nothing to cancel
- No paid entry tier tracked, so there is no subscription to cancel.
Reason composed from the fields above missing: announcement linked missing: free replacement listed recorded: two or more escape hatches
- Threatened by
- OpenAI
- Since
- February 1, 2025
- List price
- free
- Per year
- —
The backstory
Sierra charges only when the agent actually resolves something, which is a pricing model that only makes sense if you are confident in the product. It competes with Zendesk and Intercom shipping their own agents, so the fight is over which agent a large enterprise trusts with its brand voice.